GPS integration

ezio · Post by **ezio** » Mon Dec 31, 2012 5:07 pm

EOSBandi wrote:The vendor ID which is set in the module.
PA6B made by Global-Top, and they wrote the 1.9 firmware
FMP04 made by FTech and they did not wrote any firmware

A1.5E is an NMEA only firmware.... the latest fw for your module is the 1.3-(v1.6) for binary mode. (it also made by Global-Top but did not check for vendor ID)

Is there a way to change the vendor id?
Or maybe we can patch the firmware?

EOSBandi · Post by **EOSBandi** » Tue Jan 01, 2013 4:07 am

Well, I think it is not possible to change the vendor id. Firmware patching is possible, you need ida pro and some knowledge of arm8 assembly.

faraz · Post by **faraz** » Wed Jan 02, 2013 7:54 pm

Dear Eosbondi, the distance to home turns zero after 655m and restarts. Please look into issue also. Thanks

EOSBandi · Post by **EOSBandi** » Wed Jan 02, 2013 8:20 pm

Hi !
Yes I know. Only with i2c-gps, and it will be fixed with the 2.2 release of the i2c-gps...
BTW. 665M is usually more than LOS and flying without LOS is not legal in many countries....
EOS

faraz · Post by **faraz** » Wed Jan 02, 2013 8:23 pm

Thanks..

mahowik · Post by **mahowik** » Fri Jan 04, 2013 7:29 pm

EOSBandi wrote:I just committed some rework on the HMC5883L gain calibration (init). The code is based on Fabio's FreeIMU code and I think this is as good now as it could be on this platform. After some experimenting I decided to keep the current offset calibration method (MAG DANCE) since the ellipsoid to sphere method did not gave significantly better results, but added difficulty to the calibration process. I tested it but i would appriciate if somebody will took a look.

Hi EOSBandi,

I have tried this new solution but after set of calibration attempts I couldn't get linear values... e.g. if on north it shows 0 degree, for south it's ~165, but not 180
With old calibration non-linearity was max 3-5 degree for all directions...

Probably at my location ellipsoid much elongated and old calibration was closer... What do you think?

thx-
Alex

majoo · Post by **majoo** » Fri Jan 04, 2013 8:49 pm

Hello
can please help me someone to take my GPS Modul module"I2C PA6C GPS + LLC breakout board 3, 3/5V by Drotek" into operation? I read a lot of threats here, but I’m still unsuccessful.
I’m using the flight control board"MultiWii 328 p flight controller w/FTDI & DSM2 port" from Hobbyking
I get only I2C errors and no single satellite in the MultiWiiGui.
If I connect the the GPS Modul with the FTDI and do not cross RX / TX by using some extra cables, I see 8 satellite with the "mini GPS tool V1. 7. 1" (I select115200 baud to access.)
I tried to put the I2C_GPS_NAV on the GPS Modul by using the Arduino 1.01, but at the end of the transferring process I get the error “avrdude: stk500_getsync(): not in sync: resp=0x00” Before I do that, I had to open the solder bridge on the GPS Board. Beside this point I'm not shure if the step is realy nessesarry, because drotec postet at the description of the Board following:

"Bootloader and firmware of Atmega328 already flashed"
"Firmware of GPS is configured with 115200 Baud and 10 Hz parameter

In the config.h of the MultiWii 2.1 I did following changes:

Code: Select all

#define I2C_SPEED 400000L
#define I2C_GPS

It would be great, if anyone help me out here.
Martin

EOSBandi · Post by **EOSBandi** » Sat Jan 05, 2013 12:43 am

mahowik wrote:
EOSBandi wrote:I just committed some rework on the HMC5883L gain calibration (init). The code is based on Fabio's FreeIMU code and I think this is as good now as it could be on this platform. After some experimenting I decided to keep the current offset calibration method (MAG DANCE) since the ellipsoid to sphere method did not gave significantly better results, but added difficulty to the calibration process. I tested it but i would appriciate if somebody will took a look.

Hi EOSBandi,

I have tried this new solution but after set of calibration attempts I couldn't get linear values... e.g. if on north it shows 0 degree, for south it's ~165, but not 180
With old calibration non-linearity was max 3-5 degree for all directions...

Probably at my location ellipsoid much elongated and old calibration was closer... What do you think?

thx-
Alex

Did you set your magdeclination ?
EOS

mahowik · Post by **mahowik** » Sat Jan 05, 2013 6:02 am

EOSBandi wrote:
mahowik wrote:Hi EOSBandi,

I have tried this new solution but after set of calibration attempts I couldn't get linear values... e.g. if on north it shows 0 degree, for south it's ~165, but not 180
With old calibration non-linearity was max 3-5 degree for all directions...

Probably at my location ellipsoid much elongated and old calibration was closer... What do you think?

thx-
Alex

Did you set your magdeclination ?
EOS

Of course! But in any case magdeclination set only linear correction, but I have talked about non-linearity, i.e. when rotating for 180 degree from any position you can get yaw-diff 160-165 degree instead of 180...

Code: Select all

//MONTREAL QUEBEC
    //Magnetic declination: 14? 52' WEST
    //Declination is NEGATIVE
    #define MAG_DECLINIATION  -14.86f              //For MONTREAL QUEBEC.

so probably ellipsoid to sphere calibration still make sense...

thx-
Alex

Rainer · Post by **Rainer** » Sat Jan 05, 2013 8:11 pm

majoo wrote:Hello
can please help me someone to take my GPS Modul module"I2C PA6C GPS + LLC breakout board 3, 3/5V by Drotek" into operation? I read a lot of threats here, but I’m still unsuccessful.
I’m using the flight control board"MultiWii 328 p flight controller w/FTDI & DSM2 port" from Hobbyking
I get only I2C errors and no single satellite in the MultiWiiGui.
If I connect the the GPS Modul with the FTDI and do not cross RX / TX by using some extra cables, I see 8 satellite with the "mini GPS tool V1. 7. 1" (I select115200 baud to access.)
I tried to put the I2C_GPS_NAV on the GPS Modul by using the Arduino 1.01, but at the end of the transferring process I get the error “avrdude: stk500_getsync(): not in sync: resp=0x00” Before I do that, I had to open the solder bridge on the GPS Board. Beside this point I'm not shure if the step is realy nessesarry, because drotec postet at the description of the Board following:
"Bootloader and firmware of Atmega328 already flashed"
"Firmware of GPS is configured with 115200 Baud and 10 Hz parameters"
In the config.h of the MultiWii 2.1 I did following changes:
Code: Select all
#define I2C_SPEED 400000L
#define I2C_GPS   
It would be great, if anyone help me out here.
Martin

hello

this will help a little: http://www.drotek.fr/forum/viewtopic.php?f=9&t=39

majoo · Post by **majoo** » Sat Jan 05, 2013 11:01 pm

Thanks Rainer, but I do not speak france and google translator is not exact enaugh to understand the relations.

Neo360 · Post by **Neo360** » Wed Jan 09, 2013 9:59 pm

Hi to all, anyone can ask me why my home arrow was always wrong?? And see the Home distance, when was at 652m the counter restart to 0m, was normal?

See the video:

http://www.youtube.com/watch?v=7x0MTfyN ... Sw&index=1

EOSBandi · Post by **EOSBandi** » Wed Jan 09, 2013 10:31 pm

Neo360 wrote:Hi to all, anyone can ask me why my home arrow was always wrong?? And see the Home distance, when was at 652m the counter restart to 0m, was normal?

See the video:

http://www.youtube.com/watch?v=7x0MTfyN ... Sw&index=1

I can ask you, why your home arrow always wrong ?

:D:D
Both simptoms are known errors and will be fixed in the upcoming release of i2c-gps-nav.

Neo360 · Post by **Neo360** » Wed Jan 09, 2013 11:36 pm

EOSBandi wrote:
Neo360 wrote:Hi to all, anyone can ask me why my home arrow was always wrong?? And see the Home distance, when was at 652m the counter restart to 0m, was normal?

See the video:

http://www.youtube.com/watch?v=7x0MTfyN ... Sw&index=1

I can ask you, why your home arrow always wrong ? :D:D
Both simptoms are known errors and will be fixed in the upcoming release of i2c-gps-nav.

Ok i'm wait the new version. How long?

scanman · Post by **scanman** » Thu Jan 10, 2013 7:59 am

Hello EOS Bandi , do you know of anywhere else i can buy the i2c-nav boards other than RCTimer. I have bought 3 boards from them over the past 6 months and all three work for a while and then they blow (no light and then heating up). It has happened on 2 GPS units.

This last board that blew also blew my brand new Crius SE v2.0 on its way out on a brand new tri-copter build.

So i want to use i2cNav but dont want to blow any more hardware.

ApoC · Post by **ApoC** » Thu Jan 10, 2013 9:03 am

Hey PPL

This Thread is sooo huge atm. i was a long time not up-to-date with MWii and GPS.

What is the actual best GPS to I²C solution? With MTK and 1.9 FW, or UBlox GPS?

I can flash a "poor mans" Arduino with the Code from EOSBandi and connect it to MWii. Okay, but im searching for an allinone GPS to I²C Board. This from RCTimer seems to be dead after a while, so i ask u, what another complete board is done?
The Drotek Board has "only" a MTK Chip, i thought, UBlox is better, or?

And can plz somebody (maybe Alex) collect the whole actual information in the first thread? Im very confused about the informations, that are splitted in so many answers.

What i mean is: What is the actual solution, to get the best GPS System for Multiwii?

scanman · Post by **scanman** » Thu Jan 10, 2013 9:12 am

Hello Apoc, i am now going to try the All-in-one boards like this one, it is less to go wrong and one set of code . the GPS plugs straight in to the spare serial port.
I have ordered one and will see how it goes.
There are some other advantages to the i2c-nav board , but for general navigation maybe keep it simple is better.

http://rctimer.com/index.php?gOo=goods_ ... oductname=

ApoC · Post by **ApoC** » Thu Jan 10, 2013 11:02 am

Wich is the matching GPS Board?

http://rctimer.com/index.php?gOo=goods_ ... oductname=
This?

Or this?
http://rctimer.com/index.php?gOo=goods_ ... oductname=

scanman · Post by **scanman** » Thu Jan 10, 2013 11:59 am

you dont need the "Extend Board for AIO PRO FC" because that just allows you to update the quad copter's GPS waypoints using your laptop while its flying. for basic gps return to home and pos hold just get the basic GPS "u-Blox CN-06 GPS Receiver"

albertoLG · Post by **albertoLG** » Fri Jan 11, 2013 7:17 am

My CN-06 V2 has arrived, mounted and it's working fine, should I change something in the "u-center" software?

thank you

Deet · Post by **Deet** » Sat Jan 12, 2013 1:13 am

For those looking for a reliable I2C GPS board, look at the one from multiwiicopter.com. It also has an external Mag sensor which helps with accuracy.

http://www.multiwiicopter.com/products/ ... iwiicopter

Mystic3D · Post by **Mystic3D** » Sat Jan 12, 2013 7:22 am

Deet wrote:For those looking for a reliable I2C GPS board, look at the one from multiwiicopter.com. It also has an external Mag sensor which helps with accuracy.

http://www.multiwiicopter.com/products/ ... iwiicopter

Yes pretty much plug and play, just pid tuning, even for someone(me) a week into my first Multi.
Steep learning curve, but, flies great, just trying to get Baro and PH tuned with R 2.1

Sharkcopter · Post by **Sharkcopter** » Sun Jan 13, 2013 9:42 am

Hi
I am a bit confused, at the moment i have two Navigatron V.2 from Flytron that works with AXN1.51_2722_3329_384.1151100.5 and I2C_GPS_NAV-v2.1rc2 on Atmega 328.
Is this the last possibility for Navigatron V.2 or can improve ?
Thanks in advance

MalcolmX · Post by **MalcolmX** » Wed Jan 16, 2013 7:19 pm

Sorry if i'm out of context,
but does anyone have a Fastrax iTrax comptatible GPS receiver that sends data to a Server via GPRS, so that you can use data to show GPS position and status in Google Maps?

Thanks in advance,

EOSBandi · Post by **EOSBandi** » Wed Jan 16, 2013 8:11 pm

Sharkcopter wrote:Hi
I am a bit confused, at the moment i have two Navigatron V.2 from Flytron that works with AXN1.51_2722_3329_384.1151100.5 and I2C_GPS_NAV-v2.1rc2 on Atmega 328.
Is this the last possibility for Navigatron V.2 or can improve ?
Thanks in advance

You can update your GPS module firmware to AXN1.51_2776_3329_384.1151100.5_v19 and enable MTK_BINARY19... ATM this is the best that you can get from your hw.

PonyoFS · Post by **PonyoFS** » Thu Jan 17, 2013 6:34 pm

Hi,
would it be possible to use the i2c sonar (like SRF08) without slowing down the process?
I have actually a navigatron and it's so hard to connect something on the unused inputs of 328.

realpastaman · Post by **realpastaman** » Fri Jan 18, 2013 3:20 pm

EOSBandi wrote:
Sharkcopter wrote:Hi
I am a bit confused, at the moment i have two Navigatron V.2 from Flytron that works with AXN1.51_2722_3329_384.1151100.5 and I2C_GPS_NAV-v2.1rc2 on Atmega 328.
Is this the last possibility for Navigatron V.2 or can improve ?
Thanks in advance

You can update your GPS module firmware to AXN1.51_2776_3329_384.1151100.5_v19 and enable MTK_BINARY19... ATM this is the best that you can get from your hw.

Hi I wonder if someone can help me? Trying to get the best out of my Navigatron V.2 I managed to updates its firmware to AXN1.51_2776_3329_384.1151100.5_v19 ok! Thats the good news!
The bad news is that when I use minigps it seems that it only communicates at 38400 I also noticed that the red led on the Navigatron starts flashing and then stops completely. Not daunted I uploaded I2CGPS - Inteligent GPS and NAV module for MultiWii by EOSBandi V2.1 to the Navigatron after #define GPS_SERIAL_SPEED 115200 and #define MTK were set.

On Multiwii r1315 I have done #define MTK_BINARY19 - result no fix!

and Navigatron red led is off.

Ive tried to reflash the Navigatron back to how it was but can no longer flash it ? Can someone please help? Have i bricked my Navigatron? and why does it now only auto detect with minigps @ 38400 and no longer updates or reports its firmware version

Any help would be much appreciated thanks

realpastaman · Post by **realpastaman** » Fri Jan 18, 2013 6:06 pm

realpastaman wrote:
EOSBandi wrote:
Sharkcopter wrote:Hi
I am a bit confused, at the moment i have two Navigatron V.2 from Flytron that works with AXN1.51_2722_3329_384.1151100.5 and I2C_GPS_NAV-v2.1rc2 on Atmega 328.
Is this the last possibility for Navigatron V.2 or can improve ?
Thanks in advance

You can update your GPS module firmware to AXN1.51_2776_3329_384.1151100.5_v19 and enable MTK_BINARY19... ATM this is the best that you can get from your hw.

Hi I wonder if someone can help me? Trying to get the best out of my Navigatron V.2 I managed to updates its firmware to AXN1.51_2776_3329_384.1151100.5_v19 ok! Thats the good news!
The bad news is that when I use minigps it seems that it only communicates at 38400 I also noticed that the red led on the Navigatron starts flashing and then stops completely. Not daunted I uploaded I2CGPS - Inteligent GPS and NAV module for MultiWii by EOSBandi V2.1 to the Navigatron after #define GPS_SERIAL_SPEED 115200 and #define MTK were set.

On Multiwii r1315 I have done #define MTK_BINARY19 - result no fix! and Navigatron red led is off.

Ive tried to reflash the Navigatron back to how it was but can no longer flash it ? Can someone please help? Have i bricked my Navigatron? and why does it now only auto detect with minigps @ 38400 and no longer updates or reports its firmware version

Any help would be much appreciated thanks

Sorry all, I forgot to do blink sketch before using minigps again ! Now the Navigatron when query by minigps gives me AXN_1.51 2276 and communicates on 115200

So I guess the AXN1.51_2776_3329_384.1151100.5_v19 firmware is working fine -

With blink sketch on the Navigatron, the red led on the top of the Navigatron blinks until it aquires sats and then goes out - Is this correct?

My problem now is exactly which sketch to upload to the Flytron?

What to change on on the multiwii r1315/6 and flytron when I enable MTK_BINARY19 ?

Should be easy for someone - sorry to be so thick!

vineetaquarius · Post by **vineetaquarius** » Fri Jan 18, 2013 7:59 pm

hi all this is the first time i am posting some thing on this forum , pardon me if i am over ruling this forum rule
guys please help

i have been trying to make gps works now , with different baud setting , but no luck yet

please advise what to edit

gps connections

gnd - gnd
vcc - 5 volts
gps rx - aip pro v2.0 tx2
gps tx - rx2

board

aio pro v 2.0

http://www.rctimer.com/index.php?gOo...5&productname=

gps

u-Blox CN-06 GPS Receiver V2.0

http://www.rctimer.com/index.php?gOo...3&productname=

software

multiwii 2.1

now what is the correct baud rate and wiring please some body let me know who have got it worked

do i need ubox and ftdi also ? , i read some where that there is no need to set this gps as it is already configured.

ps : i am using v2 for both board and gps

please any body

realpastaman · Post by **realpastaman** » Sat Jan 19, 2013 3:34 am

EOSBandi wrote:
Sharkcopter wrote:Hi
I am a bit confused, at the moment i have two Navigatron V.2 from Flytron that works with AXN1.51_2722_3329_384.1151100.5 and I2C_GPS_NAV-v2.1rc2 on Atmega 328.
Is this the last possibility for Navigatron V.2 or can improve ?
Thanks in advance

You can update your GPS module firmware to AXN1.51_2776_3329_384.1151100.5_v19 and enable MTK_BINARY19... ATM this is the best that you can get from your hw.

Having had a chance to get more familiar with the Navigatron V.2 from Flytron I do not think it will work when updated to AXN1.51_2776_3329_384.1151100.5_v19
it seems that SBAS is not properly set by minigps tool after down powering the Flytron SBAS is no longer set. With version AXN1.51_2722_3329_384.1151100.5 SBAS is set OK. Does anyone else find this?

zerosignal · Post by **zerosignal** » Sat Jan 19, 2013 11:26 am

vineetaquarius wrote:hi all this is the first time i am posting some thing on this forum , pardon me if i am over ruling this forum rule
guys please help

i have been trying to make gps works now , with different baud setting , but no luck yet

please advise what to edit

gps connections

gnd - gnd
vcc - 5 volts
gps rx - aip pro v2.0 tx2
gps tx - rx2

board

aio pro v 2.0

http://www.rctimer.com/index.php?gOo...5&productname=

gps

u-Blox CN-06 GPS Receiver V2.0

http://www.rctimer.com/index.php?gOo...3&productname=

software

multiwii 2.1

now what is the correct baud rate and wiring please some body let me know who have got it worked

do i need ubox and ftdi also ? , i read some where that there is no need to set this gps as it is already configured.

ps : i am using v2 for both board and gps

please any body

I've got a similar issue with almost identical hardware. Set the GPS module via FTDI to 115200 and 10Hz, works fine with ucenter and gets a lock right away. When i plug into multiwiiconf, i can see the compass edge blinking indicating GPS frames are being received but it never acheives a lock when plugged into the copter. None of the GPS indicators in the GUI get any values. No blinking LEDS on FC either

Anyone have some pointers as to whats going on here? Im stumped!

Hardware is good and wiring seems ok as compass blinking but no lock ever. GPS module has had config saved to EEPROM and definately retains settings across power cycles as plug back into ucenter and get a fix right away.

Any pointers greatly appreciated!

Katch · Post by **Katch** » Sat Jan 19, 2013 12:27 pm

*yawn - stretch*

hey ho - just about time for me to come out of hibernation, dust of my LiPos and get flying again.

I'm a little out of touch with the GPS development but wanted to see what people think of this GPS module that has popped up on GLB;

http://www.goodluckbuy.com/ublox-6m-gps ... style.html

Looks like a good'un as it has a built in EEPROM and I love how easy it will be to mount.

I'm planning on stripping back one of my MEGA based FCs and using a standalone compass BoB and try and find somewhere to mount it that is well away from interference.

dramida · Post by **dramida** » Sat Jan 19, 2013 2:00 pm

I was thinking buying this GPS( Ublox neo6M with eeprom) with this convenient shape but it costs 36 $ with the same electronics than 21$ from HK:
http://www.hobbyking.com/hobbyking/stor ... odule.html

thebgrian · Post by **thebgrian** » Sat Jan 19, 2013 7:33 pm

I have some problems also getting my MTK gps from Navigatron v1 to work with Multiwii on AIO. I have the GPS module disconnected from the 328 chip and using it like a pure serial GPS. All the flashes work fine when tested with the Mini GPS tool. Tried DIY Drones v.1.6 and 1.9. Using TeraTerm I can connect and get data stream at 38400 speed. The data is in the following format:
$GPGGA,182044.600,330x.xxxx,N,0965x.xxxx,W,1,7,1.09,173.8,M,-24.1,M,,*6C
$GPGSA,A,3,21,18,15,29,22,26,09,,,,,,2.02,1.09,1.70*04
$GPRMC,182044.600,A,330x.xxxx,N,0965x.xxxx,W,0.00,138.85,190113,,,A*7A
$GPVTG,138.85,T,,M,0.00,N,0.00,K,A*3A

The x-es are numbers actually.

In config.h I have Serial 2 set for 38400, GPS serial port 2 and GPS speed 38400 (which I believe doesn't matter, since we are not sending any params to the GPS module).
I have only Tx from GPS connected. For GPS protocol selected is MTK_BINARY19 and the GPS module is flashed with the ver 1.9.
Also tested with MegapirateNG on the same board and the GPS works and shows 3D fix, so the hardware looks fine.
I ran out of ideas what is wrong other than somehow the MultiWii doesn't understand the data sent from the GPS. Can somebody with similar setup give me a hint what is wrong?

EOSBandi · Post by **EOSBandi** » Sat Jan 19, 2013 7:37 pm

thebgrian wrote:I have some problems also getting my MTK gps from Navigatron v1 to work with Multiwii on AIO. I have the GPS module disconnected from the 328 chip and using it like a pure serial GPS. All the flashes work fine when tested with the Mini GPS tool. Tried DIY Drones v.1.6 and 1.9. Using TeraTerm I can connect and get data stream at 38400 speed. The data is in the following format:
$GPGGA,182044.600,330x.xxxx,N,0965x.xxxx,W,1,7,1.09,173.8,M,-24.1,M,,*6C
$GPGSA,A,3,21,18,15,29,22,26,09,,,,,,2.02,1.09,1.70*04
$GPRMC,182044.600,A,330x.xxxx,N,0965x.xxxx,W,0.00,138.85,190113,,,A*7A
$GPVTG,138.85,T,,M,0.00,N,0.00,K,A*3A

The x-es are numbers actually.

In config.h I have Serial 2 set for 38400, GPS serial port 2 and GPS speed 38400 (which I believe doesn't matter, since we are not sending any params to the GPS module).
I have only Tx from GPS connected. For GPS protocol selected is MTK_BINARY19 and the GPS module is flashed with the ver 1.9.
Also tested with MegapirateNG on the same board and the GPS works and shows 3D fix, so the hardware looks fine.
I ran out of ideas what is wrong other than somehow the MultiWii doesn't understand the data sent from the GPS. Can somebody with similar setup give me a hint what is wrong?

Wrong, the code initialise the GPS module, you need two way communication....

thebgrian · Post by **thebgrian** » Sat Jan 19, 2013 8:09 pm

Thank you, EOSBandi
Do I need to change the speed settings for Serial and GPS? Tried adding the other serial connection, but still no luck.
I did it according to the instructions at conf.h

/* GPS using a SERIAL port
only available on MEGA boards (this might be possible on 328 based boards in the future)
if enabled, define here the Arduino Serial port number and the UART speed
note: only the RX PIN is used, the GPS is not configured by multiwii
the GPS must be configured to output GGA and RMC NMEA sentences (which is generally the default conf for most GPS devices)
at least 5Hz update rate. uncomment the first line to select the GPS serial port of the arduino */

zerosignal · Post by **zerosignal** » Sun Jan 20, 2013 12:17 am

Noticed in the current dev version there ia now a #define UBLOX param in config.h - could this now be why the AIO pro is not acheiving a GPS fix? Im currently running stock 2.1 where no such option exists.

Is it worth flashing current dev or is something else causing my GPS headaches?

vineetaquarius · Post by **vineetaquarius** » Sun Jan 20, 2013 9:45 am

zerosignal wrote:
vineetaquarius wrote:hi all this is the first time i am posting some thing on this forum , pardon me if i am over ruling this forum rule
guys please help

i have been trying to make gps works now , with different baud setting , but no luck yet

please advise what to edit

gps connections

gnd - gnd
vcc - 5 volts
gps rx - aip pro v2.0 tx2
gps tx - rx2

board

aio pro v 2.0

http://www.rctimer.com/index.php?gOo...5&productname=

gps

u-Blox CN-06 GPS Receiver V2.0

http://www.rctimer.com/index.php?gOo...3&productname=

software

multiwii 2.1

now what is the correct baud rate and wiring please some body let me know who have got it worked

do i need ubox and ftdi also ? , i read some where that there is no need to set this gps as it is already configured.

ps : i am using v2 for both board and gps

please any body

I've got a similar issue with almost identical hardware. Set the GPS module via FTDI to 115200 and 10Hz, works fine with ucenter and gets a lock right away. When i plug into multiwiiconf, i can see the compass edge blinking indicating GPS frames are being received but it never acheives a lock when plugged into the copter. None of the GPS indicators in the GUI get any values. No blinking LEDS on FC either

Anyone have some pointers as to whats going on here? Im stumped!

Hardware is good and wiring seems ok as compass blinking but no lock ever. GPS module has had config saved to EEPROM and definately retains settings across power cycles as plug back into ucenter and get a fix right away.

Any pointers greatly appreciated!

thankyou zerosignal ,ordered ftdi
also
can you check above my connections are ok for gps

did your problem solved .?

Mark_K · Post by **Mark_K** » Sun Jan 20, 2013 10:07 am

The RcTimer u-blox GPS that you bought defaults to 9600 baud. the GPS config options need to be set to 9600.

I use the updated GPS code that EOSBandi wrote for 2.1 (Found on this forum). That code will connect at 9600 but then change the baud rate to 57600 with a 5Hz update.

Also make sure you're wired correctly. (Default Rctimer wiring is wrong for some boards)

Vcc -> 5v, Gnd -> Gnd, Tx -> Rx, Rx -> Tx

zerosignal · Post by **zerosignal** » Sun Jan 20, 2013 10:24 am

Vineetaquarius,
I think you're wired correctly. My wiring is the same using serial tx2/rx2. I think my problem is down to my version of multiwii perhaps. Im seeing the flashing compass in GUI but never pick up any sats or a fix. Using the wingui i can log out the GPS data to a file. Everything is 0 so i'm not sure multiwii is parsing the data from the GPS. With ucenter i get a lock in a couple of seconds even in my house

Will let you know how i get on. Good luck!

vineetaquarius · Post by **vineetaquarius** » Sun Jan 20, 2013 1:55 pm

Mark_K wrote:The RcTimer u-blox GPS that you bought defaults to 9600 baud. the GPS config options need to be set to 9600.

I use the updated GPS code that EOSBandi wrote for 2.1 (Found on this forum). That code will connect at 9600 but then change the baud rate to 57600 with a 5Hz update.

Also make sure you're wired correctly. (Default Rctimer wiring is wrong for some boards)

Vcc -> 5v, Gnd -> Gnd, Tx -> Rx, Rx -> Tx

thanks mark

ok i have wired the same way you are telling rc to tx and tx to rx , but you see if you connect it to i2c port then you will have 1rx 1tx, 2rx 2tx, 3rx 3tx , which way to go , currently i have connected to gps rx to tx1 and gps tx to rx1 . is that right ?

second thing can you give me a link for the multiwii code 2.1 from eosbandi which you are talking about , or can you send to my mail vineet.aquarius@gmail.com , that would be very great full of you

vineetaquarius · Post by **vineetaquarius** » Sun Jan 20, 2013 2:01 pm

zerosignal wrote:Vineetaquarius,
I think you're wired correctly. My wiring is the same using serial tx2/rx2. I think my problem is down to my version of multiwii perhaps. Im seeing the flashing compass in GUI but never pick up any sats or a fix. Using the wingui i can log out the GPS data to a file. Everything is 0 so i'm not sure multiwii is parsing the data from the GPS. With ucenter i get a lock in a couple of seconds even in my house

Will let you know how i get on. Good luck!

see the above post of mark

he is saying something about a version which is working fine , i am waiting for the link of that version , you should also try that , i think it is probably some thing with the multii wii version

good luck

thebgrian · Post by **thebgrian** » Sun Jan 20, 2013 11:44 pm

EOSBandi wrote:
thebgrian wrote:I have some problems also getting my MTK gps from Navigatron v1 to work with Multiwii on AIO. I have the GPS module disconnected from the 328 chip and using it like a pure serial GPS. All the flashes work fine when tested with the Mini GPS tool. Tried DIY Drones v.1.6 and 1.9. Using TeraTerm I can connect and get data stream at 38400 speed. The data is in the following format:
$GPGGA,182044.600,330x.xxxx,N,0965x.xxxx,W,1,7,1.09,173.8,M,-24.1,M,,*6C
$GPGSA,A,3,21,18,15,29,22,26,09,,,,,,2.02,1.09,1.70*04
$GPRMC,182044.600,A,330x.xxxx,N,0965x.xxxx,W,0.00,138.85,190113,,,A*7A
$GPVTG,138.85,T,,M,0.00,N,0.00,K,A*3A

The x-es are numbers actually.

In config.h I have Serial 2 set for 38400, GPS serial port 2 and GPS speed 38400 (which I believe doesn't matter, since we are not sending any params to the GPS module).
I have only Tx from GPS connected. For GPS protocol selected is MTK_BINARY19 and the GPS module is flashed with the ver 1.9.
Also tested with MegapirateNG on the same board and the GPS works and shows 3D fix, so the hardware looks fine.
I ran out of ideas what is wrong other than somehow the MultiWii doesn't understand the data sent from the GPS. Can somebody with similar setup give me a hint what is wrong?

Wrong, the code initialise the GPS module, you need two way communication....

Got it finally. It is simple as expected. To have my GPS initialize I had to enable not only #define MTK_BINARY19 but also #define INIT_MTK_GPS. Pretty obvious right?

So here are my GPS related settings for MTK ver 1.9 (it should be the same for 1.6) for AIO from Hobbyking/Crius:

#define SERIAL2_COM_SPEED 38400

#define GPS_SERIAL 2 // should be 2 for flyduino v2. It's the serial port number on arduino MEGA
#define GPS_BAUD 38400
#define MTK_BINARY19
#define INIT_MTK_GPS // initialize MTK GPS for using selected speed, 5Hz update rate and GGA & RMC sentence or binary settings

Mark_K · Post by **Mark_K** » Mon Jan 21, 2013 10:27 am

vineetaquarius wrote:ok i have wired the same way you are telling rc to tx and tx to rx , but you see if you connect it to i2c port then you will have 1rx 1tx, 2rx 2tx, 3rx 3tx , which way to go , currently i have connected to gps rx to tx1 and gps tx to rx1 . is that right ?

second thing can you give me a link for the multiwii code 2.1 from eosbandi which you are talking about , or can you send to my mail vineet.aquarius@gmail.com , that would be very great full of you

Mine is connected to serial port 2 so GPS_TX->RX2, GPS_RX->TX2 and I have these defines in my config.h in the GPS section
:
#define GPS_SERIAL 2 // should be 2 for flyduino v2. It's the serial port number on arduino MEGA
#define GPS_BAUD 57600 // It's starts as 9600 baud but then it is changed during initialization
#define GPS_RATE 200 //200ms for 5hz
#define UBLOX

And under GPS filtering I commented out the line below and added the next line after it:
// #define GPS_FILTERING // add a 5 element moving average filter to GPS coordinates, helps eliminate gps noise but adds latency comment out to disable
#define GPS_LEAD_FILTER

This is the thread where I got my revised gps.ino file. I used the modified bug fixed version of gps.ino by quadwalker on page 7:
http://www.multiwii.com/forum/viewtopic.php?f=8&t=2166&hilit=ublox

Oh, and the above assumes you are using Multiwii 2.1

ezio · Post by **ezio** » Wed Jan 23, 2013 8:23 pm

Hi
Do I have to disable #define GPS_LEAD_FILTER in multiwii conf when I use i2c GPS ? In the newest version of i2c GPS there is GPS_LEAD_FILTER already.

Bart

vineetaquarius · Post by **vineetaquarius** » Thu Jan 24, 2013 5:45 pm

Mark_K wrote:
vineetaquarius wrote:ok i have wired the same way you are telling rc to tx and tx to rx , but you see if you connect it to i2c port then you will have 1rx 1tx, 2rx 2tx, 3rx 3tx , which way to go , currently i have connected to gps rx to tx1 and gps tx to rx1 . is that right ?

second thing can you give me a link for the multiwii code 2.1 from eosbandi which you are talking about , or can you send to my mail vineet.aquarius@gmail.com , that would be very great full of you

Mine is connected to serial port 2 so GPS_TX->RX2, GPS_RX->TX2 and I have these defines in my config.h in the GPS section
:
#define GPS_SERIAL 2 // should be 2 for flyduino v2. It's the serial port number on arduino MEGA
#define GPS_BAUD 57600 // It's starts as 9600 baud but then it is changed during initialization
#define GPS_RATE 200 //200ms for 5hz
#define UBLOX

And under GPS filtering I commented out the line below and added the next line after it:
// #define GPS_FILTERING // add a 5 element moving average filter to GPS coordinates, helps eliminate gps noise but adds latency comment out to disable
#define GPS_LEAD_FILTER

This is the thread where I got my revised gps.ino file. I used the modified bug fixed version of gps.ino by quadwalker on page 7:
http://www.multiwii.com/forum/viewtopic.php?f=8&t=2166&hilit=ublox

Oh, and the above assumes you are using Multiwii 2.1

thankyou for that all

but i need a gps settings for multiwii 2.1 i am using ublox 6 gps which has 9600 bud rate as default

Mark_K · Post by **Mark_K** » Thu Jan 24, 2013 8:35 pm

Correct. The above code works with the default 9600 baud rate. On each initialization, it changes the GPS speed from 9600 baud to 57600 baud (and the update rate to 5 hertz).

vineetaquarius · Post by **vineetaquarius** » Fri Jan 25, 2013 7:32 am

Mark_K wrote:Correct. The above code works with the default 9600 baud rate. On each initialization, it changes the GPS speed from 9600 baud to 57600 baud (and the update rate to 5 hertz).

i cannot find this code in config.h

#define GPS_RATE 200 //200ms for 5hz

should i write it like that only below baud rate .

Mark_K · Post by **Mark_K** » Fri Jan 25, 2013 7:47 am

vineetaquarius wrote:i cannot find this code in config.h

#define GPS_RATE 200 //200ms for 5hz

should i write it like that only below baud rate .

Yes. This is assuming that you are using quadwalker's gps.ino file.

vineetaquarius · Post by **vineetaquarius** » Fri Jan 25, 2013 8:23 am

Mark_K wrote:
vineetaquarius wrote:i cannot find this code in config.h

#define GPS_RATE 200 //200ms for 5hz

should i write it like that only below baud rate .

Yes. This is assuming that you are using quadwalker's gps.ino file.

i am using multiwi 2 .1 aiop files i think